Australian Water Management Review Vol 2 2013 | Page 43

Warriewood Wastewater Treatment Plant The Warriewood community has benefited significantly from a $32 million investment in Warriewood Wastewater Treatment Plant. N ow complete, the upgrades to the plant will reduce the likelihood of wet weather overflows from the treatment system to the environment and will maintain the quality of water services in the area over the coming decades. • Increase in the hydraulic capacity of the PST overflow launders to better cater for increased wet weather flows • Two new secondary clarifiers fitted with scum collection and removal facilities and associated inflow/outflow interconnection and flow distribution. • A new pump station • Refurbishment of the existing biosolids processing facility • Upgrade of the reclaimed effluent system to maintain stable flow/pressure to the odour reduction unit. • Modification to power supply arrangements within the WWTP to ensure reliable operation • Modification of site and access roads to minimise disturbance to vegetation on the site, with disturbed areas fully landscaped and restored after the completion of the works. Working with the community: Before work started in July 2011, Sydney Water: • assessed the potential environmental impacts of the proposed work. This included noise, dust, traffic and odour impacts • put a Review of Environmental Factors (REF) on public display for interested parties to consider and make written submissions • wrote a Decisions Report addressing the issues raised in submissions. This report was distributed to everyone who made written submissions. As a result of the submissions, Sydney Water: • changed the location of the access road • changed the location of the rotary drum thickeners • put other measures in place to further reduce environmenta ?????????)?????????????????????????????????????????()M????]???5??????????????-????e???????????????????????????????????????????????qQ?????????????????????????]?????????????????????????M????]???e???????????????????????????????????????????????t?5?e??????????qQ??????????????????????????????????????????t?Q??????????????????????????????????????????????????????????????M????e?9?????? ???????Q???]????????]??????Q??????A???????????????????????????????????????????A???? ??????Q?????!?????????????????9????9??????????????????????????????????????????????????????????????????????????????M????]????????????????????????????????????????????????5?e??????????????????????????????????????????????????????????qQ???????????????????????????????????????????????????????$?????????????????????????????????????????????????????q%??????????????????????????????????????????????Q??????????????????$?I?????????????????????????????????????????????????????????????????????????????????????????????????Q???????????????????????????????????????????????????$?%??????????? ????????????????M??????????????????? L????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????((0